STIGQter: STIG Summary: z/OS CL/SuperSession for ACF2 Security Technical Implementation Guide Version: 7 Release: 2 Benchmark Date: 01 Oct 2025:

CL/SuperSession Install datasets must be properly protected.

DISA Rule

SV-224284r1141413_rule

Vulnerability Number

V-224284

Group Title

SRG-OS-000080

Rule Version

ZCLSA000

Severity

CAT II

CCI(s)

• CCI-001499 - Limit privileges to change software resident within software libraries.
• CCI-002234 - Log the execution of privileged functions.

Weight

10

Fix Recommendation

Ensure that WRITE and/or greater access to CL/SuperSession install datasets is limited to systems programmers only, and all WRITE and/or greater access is logged. Auditors should have READ access.

The installing systems programmer will identify and document the product datasets, categorize them according to who will have WRITE and/or greater access, and if required, ensure that all WRITE and/or greater access is logged. The installing systems programmer will identify if any additional groups have UPDATE access for specific datasets, and once documented will work with the ISSO to ensure that they are properly restricted to the ACP (Access Control Program ) active on the system.

The following datasets are an example of datasets to be protected:

SYS2.OMEGAMON
SYS2.OMEGAMON.V-.TLSLOAD
SYS2.OMEGAMON.V-.TLVLOAD
SYS3.OMEGAMON
SYS3.OMEGAMON.RLSLOAD

The following commands are provided as an example for implementing dataset controls:

$KEY(SYS2)
OMEGAMON.- UID(syspaudt) R(A) W(L) A(L) E(A)
OMEGAMON.V-.TLSLOAD UID(syspaudt) R(A) W(L) A(L) E(A)
OMEGAMON.V-.TLVLOAD UID(syspaudt) R(A) W(L) A(L) E(A)
OMEGAMON.- UID(audtaudt) R(A) E(A)

$KEY(SYS3)
OMEGAMON.- UID(syspaudt) R(A) W(L) A(L) E(A)
OMEGAMON.RLSLOAD UID(syspaudt) R(A) W(L) A(L) E(A)
OMEGAMON.- UID(audtaudt) R(A) E(A)

Check Contents

Refer to the following report produced by the dataset and Resource Data Collection:

- SENSITVE.RPT(KLSRPT).

Automated Analysis
Refer to the following report produced by the dataset and Resource Data Collection:

- PDI(ZCLS0000).

Verify that access to the CL/SuperSession Install datasets are properly restricted. If the following guidance is true, this is not a finding.

The ACF2 dataset rules for the datasets restrict WRITE and/or greater access to systems programming personnel.

The ACF2 dataset rules for the datasets do not specify that all (i.e., failures and successes) WRITE and/or greater access will be logged.

Vulnerability Number

V-224284

Documentable

False

Rule Version

ZCLSA000

Severity Override Guidance

Refer to the following report produced by the dataset and Resource Data Collection:

- SENSITVE.RPT(KLSRPT).

Automated Analysis
Refer to the following report produced by the dataset and Resource Data Collection:

- PDI(ZCLS0000).

Verify that access to the CL/SuperSession Install datasets are properly restricted. If the following guidance is true, this is not a finding.

The ACF2 dataset rules for the datasets restrict WRITE and/or greater access to systems programming personnel.

The ACF2 dataset rules for the datasets do not specify that all (i.e., failures and successes) WRITE and/or greater access will be logged.

Check Content Reference

M

Target Key

4117